Centromerus cornupalpis O . Pickard­Cambridge 1875

Paquin, Pierre & Dupérré, Nadine, 2006, The spiders of Québec: update, additions and corrections, Zootaxa 1133, pp. 1-37 : 12

Centromerus cornupalpis O. Pickard­Cambridge 1875

( Figs 17–20 )

Material examined.— Canada: Québec: Roussillon, Châteauguay [45°23’N, 73°45’W] 21.x.2000, sifting lichens, 3ɗ 1Ψ, C. Chantal ( CPAD).

Diagnosis.— Males are recognised by the shape of the paracymbium (P) ( Fig. 17 ) and radix (RA) ( Fig. 18 ), and the presence of a long proximo­dorsal horn (arrow) on the cymbium ( Fig. 17 ). Females are distinguished by a narrow, smooth constricted scape (SC) that originates anteriorly to the postero­lateral corners of the epigynum ( Fig. 19 ).

Distribution.— Widespread in eastern North America, from Nova Scotia and Newfoundland to Tennessee and South Carolina. The species is also reported from Utah and Wyoming ( Helsdingen 1973, Buckle et al. 2001).

Remark.— Helsdingen (1973) reported that males of the species are mature in winter time. Such climatic conditions are most probably similar to those observed in Québec in late October when the present collection was done.

Figures

FIGURES 14 – 24. 14 – 16. Zelotes exiguoides. 14, palpus of male, ventral view; 15, palpal tibia of male, retrolateral view; 16 epigynum, ventral view. 17 – 20. Centromerus cornupalpis. 17, palpus of male, retrolateral view; 18, palpus of male, prolateral view; 19, epigynum, ventral view; 20, epigynum, lateral view. 21 – 24. Ceratinopsis nigripalpis. 21, palpus of male, ventral view; 22, cephalothorax of male, lateral view; 23, palpal tibia of male, dorsal view; 24, epigynum, ventral view.